Software like 3uTools , iAvenue , or Apple Configurator 2 is often used instead of iTunes, as iTunes will try to force the absolute latest update.
: The "iOS 9" in the title suggests it contains assets or a system image modeled after Apple's 2015 operating system. File Extension
: Script files used by custom recovery tools like TWRP or CWM to flash the mod onto an Android device. 4. Third-Party Apps
: Installing unverified system files can lead to "boot loops" or require a full factory reset, causing total data loss.
The IPSW file and verification files contain digital signatures, which are used to verify the authenticity of the files. Specifically: